Optimal Optimal protection coordination of directional overcurrent relays in microgrids utilizing user-defined characteristic methodology and fault current limiter / (Record no. 169728)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 05317namaa22004211i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - أخر تعامل مع التسجيلة | |
| control field | 20250223033354.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 241225s2023 |||a|||f m||| 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloguing agency | EG-GICUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GICUC |
| Modifying agency | EG-GICUC |
| Description conventions | rda |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | eng |
| -- | ara |
| 049 ## - Acquisition Source | |
| Acquisition Source | Deposit |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 623.76 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
| Classification number | 623.76 |
| Edition number | 21 |
| 097 ## - Degree | |
| Degree | M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Local Call Number | Cai01.13.07.M.Sc.2023.Ha.O |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Authority record control number or standard number | Hassan Eid Hassan Mohamed, |
| Preparation | preparation. |
| 245 10 - TITLE STATEMENT | |
| Title | Optimal Optimal protection coordination of directional overcurrent relays in microgrids utilizing user-defined characteristic methodology and fault current limiter / |
| Statement of responsibility, etc. | by Hassan Eid Hassan Mohamed ; Supervisors Prof. Dr. Mohamed El-Sobky, Prof. Dr. Hebatallah Mohamed Sharaf. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | / التنسيق المثالي بين مرحلات الوقاية الاتجاهية ضد زيادة التيار في الشبكات الكهربائية متناهية الصغر باستخدام محددات تيار الأعطال و الخصائص المحددة من قبل المستخدم |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Date of production, publication, distribution, manufacture, or copyright notice | 2023. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 91 pages : |
| Other physical details | illustrations ; |
| Dimensions | 30 cm. + |
| Accompanying material | CD. |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Source | rda content |
| 337 ## - MEDIA TYPE | |
| Media type term | Unmediated |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | volume |
| Source | rdacarrier |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.)-Cairo University, 2023. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Bibliography: pages 200-84. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This Thesis examines the application of implementing user-defined characteristics of inverse time overcurrent relays as a benefit of utilizing numerical relays than the predefined standard curves along with the aid of Fault Current Limiters (FCL) in point of common coupling with the main grid in highly looped microgrid with intensive use of Distributed Energy Resources (DER) units. The proposed coordination strategy relies on considering relay’s constant (A and B) as a variable setting to determine the operating time of Directional Overcurrent Relays (DOCRs). In addition to the commonly used relays settings along with (FCL) in point of common coupling.<br/>Optimal FCL value together with optimal four relay settings are considered to achieve minimum overall relays operation time. The problem is formulated as constrained non-linear programming (NLP) problem with the main objective of finding the minimum overall time of operation of relays considering main and backup relays in different microgrid’s modes of operation at different fault locations and is solved using gradient-based method through MATLAB’s built in function find minimum of constrained nonlinear multivariable (fmincon) in the Optimization Toolbox. Thesis strategy is tested on IEEE 30-bus looped power distribution system equipped with synchronous generators. Results attained by proposed coordination strategy are compared with conventional strategy and shown a reduction in overall relay operating time and minimum value of FCL. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | ظهور المولدات في شبكات التوزيع الكهربائية مهدت الطريق لظهور مفهوم الشبكات الكهربائية متناهية الصغر كحل شامل لاستيعاب الطلب المتزايد علي الطاقة مع تقديم حلول لاستيعاب مصادر الطاقة المتنوعة وكذلك تقديم إمكانية العمل بشكل منفصل عن الشبكة الأم في حالات الأعطال أو العمل بشكل متكامل مع الشبكة الأم. ولكن الحالات المتغيرة للشبكات الكهربائية متناهية الصغر سواء كانت منفصلة أو متصلة بالشبكة الأم أدت لظهور بعض التحديات مثل التغيرات الكبيرة في مستوي تيارات الأعطال . <br/>استهدفت هذه الرسالة دراسة تحقق التنسيق بين مرحلات الوقاية الاتجاهية ضد زيادة التيار باستخدام إمكانية تحديد الخصائص من قبل المستخدم الموجودة في المرحلات الرقيمة للوقاية الاتجاهية ضد زيادة التيار مع استخدام محدد تيار الأعطال عند نقاط الالتقاء مع الشبكة الأم للوصول للإعدادات المثلي لمرحلات الوقاية الاتجاهية ضد زيادة التيار وكذلك القيمة المثلي لمحددات التيار للوصول لاقل زمن فصل للاعطال مع ضمان تحقق جميع قيود التنسيق في كلا حالات التوصيل الخاصة بلشبكات |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Issues CD | Issues also as CD. |
| 546 ## - LANGUAGE NOTE | |
| Text Language | Text in English and abstract in Arabic & English. |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Electrical Engineering |
| Source of heading or term | qrmak |
| 653 #0 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Distributed Generation |
| -- | Directional Overcurrent Relay |
| -- | Fault Current Limiters |
| -- | Protection coordination |
| -- | User defined characteristics |
| -- | Microgrids |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mohamed El-Sobky |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hebatallah Mohamed Sharaf |
| Relator term | thesis advisor. |
| 900 ## - Thesis Information | |
| Grant date | 01-01-2023 |
| Supervisory body | Mohamed El-Sobky |
| -- | Hebatallah Mohamed Sharaf |
| Discussion body | Adel El Samahy |
| -- | Essam El-Din Abo El-Zahab |
| Universities | Cairo University |
| Faculties | Faculty of Engineering |
| Department | Department of Electrical Power and Machines Engineering |
| 905 ## - Cataloger and Reviser Names | |
| Cataloger Name | Shimaa |
| Reviser Names | Huda |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Edition | 21 |
| Suppress in OPAC | No |
| Source of classification or shelving scheme | Home library | Current library | Date acquired | Inventory number | Full call number | Barcode | Date last seen | Effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 25.12.2024 | 90067 | Cai01.13.07.M.Sc.2023.Ha.O | 01010110090067000 | 25.12.2024 | 25.12.2024 | Thesis |